Portable display device



FIG. 1 is a top front perspective view of a portable display device showing the claimed design;

FIG. 2 is a bottom rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is an enlarged view of the left corner of FIG. 8; and,

FIG. 10 is an enlarged view of the right corner of FIG. 8.

The figures are illustrated to show color and contrast.

The broken lines in the figures show portions of the portable display device that form no part of the claimed design. 

CLAIM The ornamental design for a portable display device, as shown and described. 